Monroe Doctrine: A U.S. foreign policy regarding European countries in 1823. It stated that further efforts by European nations to colonize land or interfere with states in North or South America would be viewed as acts of aggression, requiring U.S. intervention


Spanish American War : a conflict between Spain and the United States in 1898


Roosevelt Corollary : was an addition to the Monroe Doctrine articulated by President Theodore Roosevelt in his state of the union adress in 1904 after the Venezuela crisis of 1902-03



General Santa Anna:He served as a Mexican politician and general. He greatly influenced early Mexican politics and government, a skilled soldier and cunning politician, who dominated Mexican history in the first half of the nineteenth century to such an extent that historians often refer to it as the "Age of Santa Anna".He was called "the Man of Destiny", who "loomed over his time like a melodramatic colossus, the uncrowned monarch



Benito Juarez: was a Mexican lawyer and politician of Zapotec origin from Oaxaca who served as the president of Mexico for five terms: 1858–1861 as interim, then 1861–1865, 1865–1867, 1867–1871 and 1871–1872 as constitutional president. He resisted the French occupation of Mexico, overthrew the Second Mexican Empire, restored the Republic, and used liberal measures to modernize the country.